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I want to set-up an admin area as a sub-project in the Play Framework (2.6) so have been using this documentation but am coming up with a compilation error that I just can't fix:

[error] ...conf\routes:15: not found: value admin

[error] -> /admin admin.Routes

This is my project structure:

   main-project
   _build.sbt
   _app
     _controllers
     _models
     _views
   _conf
     _application.conf
     _routes
   _modules
     _admin
       _build.sbt
       _app
         _controllers
         _models
         _views
       _conf
         _admin.routes
   _project
     _build.properties
     _plugins.sbt

main-project/build.sbt

   import play.sbt.routes.RoutesKeys

   name := "main-project"

   val defaultResolvers = Seq(
     Resolver.sonatypeRepo("snapshots")
   )

   lazy val commonSettings = Seq(
     organization := "com.boardrs",
     version := "1.0-SNAPSHOT",
     scalaVersion := "2.12.2",
     scalacOptions ++= Seq("-feature", "-language:postfixOps"),
     resolvers ++= defaultResolvers
   )


   lazy val admin = (project in file("modules/admin"))
     .settings(
       commonSettings
     ).enablePlugins(PlayScala)

   lazy val root = (project in file("."))
     .settings(
       commonSettings
     )
     .enablePlugins(PlayScala)


   routesGenerator := InjectedRoutesGenerator
   RoutesKeys.routesImport += "play.modules.reactivemongo.PathBindables._"

   libraryDependencies += guice
   libraryDependencies += "org.scalatestplus.play" %% "scalatestplus-play" % "3.0.0" % Test
   libraryDependencies += "com.h2database" % "h2" % "1.4.194"
   libraryDependencies += "com.typesafe.play" %% "play-json" % "2.6.0"
   libraryDependencies += ws

   // Play 2.6.x
   libraryDependencies ++= Seq(
     "org.reactivemongo" %% "play2-reactivemongo" % "0.12.5-play26"
   )


   libraryDependencies += "org.webjars" % "bootstrap" % "3.1.1-2"

main-project/modules/admin/build.sbt

name := "admin"

PlayKeys.devSettings += "play.http.router" -> "admin.Routes"

main-project/conf/routes (the file that contains the line referenced in the error)

       # home page
       GET     /                   controllers.HomeController.index

       ->  /admin admin.Routes

       GET     /assets/*file       controllers.Assets.at(path="/public", file)

main-project/modules/admin/conf/admin.routes

   GET /index                  controllers.admin.HomeController.index()

   GET /assets/*file           controllers.admin.Assets.versioned(path="/public/lib/admin", file)

I have carefully looked here (on Stack Overflow) and elsewhere for a solution, e.g. this question is very similar but the answer incorporates techniques that have since been deprecated. I have tried multiple combinations but the Play Framework is a delicate beast; susceptible to a multitude of configuration and compatibility issues - so I don't feel as if I am honing in on the answer on my own. Can anyone see what I can't? Thanks

jesus g_force Harris
  • 485
  • 6
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1 Answers1

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In your main-project/build.sbt:

Try changing: 

lazy val admin = (project in file("admin"))

to

lazy val admin = (project in file("modules/admin"))

I think you're missing the dependsOn and aggregateOn for the root project in your main sbt.

Try changing:

lazy val root = (project in file("."))
 .settings(
   commonSettings
 )
 .enablePlugins(PlayScala)

to

lazy val root = (project in file("."))
 .settings(
   commonSettings
 )
 .enablePlugins(PlayScala).dependsOn(admin).aggregate(admin)
Tin-Ming Ng
  • 26
  • 2